There was talk from the creators about a Wii sequel. They said something to the effect of "it would be a shame if this was the last we heard of The World Ends With You!" Of course, that was years ago... if they were to go through with it, it'd have to be on the Wii-U... which could actually be kind of interesting, because it has a two-screen thing going on like the DS does. Although it'd be even harder to look at both at once in that setup...
I'd really love it if Square were to develop some of their less well-known titles like this... some of the best RPGs of all time are one-or two game series that have never really been expanded on.

OK.....this is probably going to sound bad, but i just wanna clarify; no, I haven't actually PLAYED this game, so my opinions aren't 100% concrete arguments.....That being said, there's a reason I don't want to play it...

The battle system.
Honestly, can someone tell me why- OH WHY?- Square Enix went with THIS, but not anything else? I understand if they wanted to implement the Dual-screen capabilities of the DS, but.....why not a battle system that allows combat on ground AND in the air? It could happen. Ground combat takes up the bottom screen while the upper screen allows flying enemies to attack you....BUT, you can then use a flying move that allows you to take 'em on. Wouldn't that be sweet?! I mean, you could even make your own strategies and use really interesting combos with that; switching between the air and the ground while using combo chains. Honestly, that sounds WAY cooler than the frustrating idea of controlling TWO characters at one time, doesn't it?